DRAFT: This module has unpublished changes.

Set-Up:

 

1. Start a new experiment on the data collection system.

2. Connect a stainless steel temperature sensor and a pressure sensor to the data collection system.

3. Place the barbed connector tightly into the rubber stopper.  Connect the barbed connector to the pressure port of the sensor with a piece of tubing.

4. Wrap the Erlenmeyer flask with 10 to 15 rounds of electric tape.  This is a preventive measure in case the flask cracks.  The tape keeps the glass pieces together.

5. Mount of the 250-mL Erlenmeyer flask in a water bath in a 1500-mL beaker.  The water should cover as much of the flask as possible.

6. Place the temperature sensor in the water bath.

 

Collect Data

Perform the following steps.  Repeat this part of the procedure three times.

 

1. Measure between 0.150 g and 0.180 g of the unknown metal to the nearest milligram.  Record the mass of the sample in Table 3.

2. Using a graduated cylinder, measure 20.0mL of 3.0 M HCl solution and transfer it into the 250-mL Erlenmeyer flask.

3. Start data recording. Record the initial pressure in Table 3.

DRAFT: This module has unpublished changes.